Bromethalin poison - this type of poison can neurologic problems. Symptoms can include:

Hyperactivity, tremors

Rear leg weakness or paralysis

Seizures

Prevention is the BEST way to deal with rat and mouse poison. Be aware of what you have around the house, and what your neighbors or landlord, etc use for rodent control. These poisons are made to taste good - that's why the rats and mice eat them. Dogs will often eat the poison directly, while cats (and some dogs) will get anticoagulant rat poison when they eat rats or mice that have already been exposed to the poison. Blood tests are often needed to determine whether treatment is needed for either of these poisons. All three types of poison can be deadly. If you have any reason to suspect that your pet has eaten either type of poison, seek veterinary care immediately.